Linux

• arp
• bluetooth
• cgroup
• CPU Supervision
• dd
• dig
• Directories with most files
• Disable touchpad while typing
• Disk Usage
• E-Mail
• Enable “Tap to click” touch pad
• File Permissions
• find: delete files
• Hard Disk Management
• Installation date
• journalctl
• journalctl size
• Mount
• Performance monitoring
• Package manager commands
• Recursive md5
• Reset Root Password
• RPM Files
• rsync
• Simple HTTP Server
• Software RAID
• SSH Remove hostname
• SSH Tunnels
• sudo timeouts
• netstat
• tcpdump: filters
• USB Power Management
• User Management Cheatsheet
• vi: write as sudo
• VNC Server
• yum
• ZFS